Add 12/28 and 45/75
12/28 + 45/75 is 36/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 28 × 75 = 2100,
12/28 = 12 × 75/28 × 75 = 900/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
45/75 = 45 × 28/75 × 28 = 1260/2100 - Add the two like fractions:
900/2100 + 1260/2100 = 900 + 1260/2100 = 2160/2100 - 2160/2100 simplified gives 36/35
- So, 12/28 + 45/75 = 36/35
In mixed form: 11/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28+45/75 12/28+90/75 12/56+45/75 36/28+45/75 12/84+45/75 60/28+45/75 84/28+45/75